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PetroChina Co., Ltd.Idemitsu Kosan Co., Ltd.Exxon Mobil Corp.Mobil Corp.Standard Oil Co.Osaka Gas Co., Ltd.Saudi Arabian Oil Co.Schlumberger Technologies, Inc.Standard Oil Co.Tokyo Gas Co., Ltd.China National Offshore Oil Corp.China National Offshore Oil Corp.Schlumberger Canada Ltd.JSWChina General Nuclear Power Corp.China General Nuclear Power Corp.Chevron U.S.A., Inc.Voith GmbH & Co. KGaADuksan Co., Ltd.Dresser Industries, Inc.Dresser Industries, Inc.Beijing Yanshan Petrochemical Co., Ltd.Électricité de France SAElf Atochem SAHalliburton Co.Messer SE & Co. KGaA (Germany)Conoco, Inc.ConocoPhillipsSinopec Oilfield Service Corp.Conoco, Inc.
NIPPON STEEL Stainless Steel Corp.JFE Steel Corp.NKK Corp.NKK Corp.Sumitomo Metal Mining Co. Ltd.JX Nippon Mining & Metals Corp.JX Nippon Mining & Metals Corp.Baoshan Iron & Steel Co., Ltd.Baoshan Iron & Steel Co., Ltd.NIPPON STEEL Stainless Steel Corp.China National Offshore Oil Corp.China National Offshore Oil Corp.Tanaka Kikinzoku Kogyo KKTanaka Holdings Co. Ltd.Sankyo Aluminum Industry Co., Ltd.Dresser Industries, Inc.Dresser Industries, Inc.Jinchuan Group Co., Ltd.Armstrong Ceiling Solutions (Australia) Pty Ltd.Sinopec Oilfield Service Corp.Toyo Kohan Co., Ltd.thyssenkrupp Steel Europe AGUsui Co. Ltd.Senju Metal Industry Co., Ltd.Shanxi Taigang Stainless Steel Co., Ltd.CNOOC Energy Technology & Services Ltd.Shougang Group Co., Ltd.Wuhan Iron & Steel Group Corp.Nanjing Iron & Steel Co., Ltd.Nippon Steel Metal Products Co., Ltd
JFE Holdings, Inc.Idemitsu Kosan Co., Ltd.Hitachi Construction Machinery Co., Ltd.UBE Corp.Taiyuan University of TechnologyAngang Steel Co., Ltd.Xi'an University of Science & TechnologyChina Energy Investment Corp., Ltd.Wuhan Iron & Steel Group Corp.Aluminium Pechiney SASUHuainan Mining (Group) Co., Ltd.Huainan Mining (Group) Co., Ltd.Huaneng Power International, Inc.China National Heavy Machinery Research Institute Co., Ltd.China National Heavy Machinery Research Institute Co., Ltd.Sany Heavy Equipment Co., Ltd.Tokai Carbon Co., Ltd.Heilongjiang University of Science & TechnologyBeijing Shenwu Environment & Energy Technology Co., Ltd.Joy Manufacturing Co.Joy Manufacturing Co.Tata Steel Ltd.Guangdong Zhongnan Iron & Steel Co., Ltd.SGIS Songshan Co., Ltd.China Shenhua Coal to Liquid & Chemical Co., Ltd.Tiandi Science & Technology Co., Ltd.Charbonnages de FranceJoy Global Underground Mining LLCBaosteel Group Xinjiang Bayi Iron & Steel Co., Ltd.Wengfu (Group) Co., Ltd.
China National Heavy Machinery Research Institute Co., Ltd.China National Heavy Machinery Research Institute Co., Ltd.Sany Heavy Equipment Co., Ltd.Joy Manufacturing Co.Joy Manufacturing Co.Joy Global Underground Mining LLCHydril Co.Varco International, Inc.Camco International, Inc.China Coal Beijing Coal Mining Machinery Co. Ltd.Tone Boring Co., Ltd.Bosun Co., Ltd.Lubrizol Oilfield Solutions, Inc.Shinhan Diamond Industrial Co., Ltd.Shinhan Diamond Industrial Co., Ltd.MAN TAKRAF Frdertechnik GmbHMAN TAKRAF Frdertechnik GmbHFriedrich Duss Maschinenfabrik GmbH & Co. KGNational Mine Service Co.Chengdu Ouxun Technology Co., Ltd.Interwell Norway ASPetreco International, Inc.Minova Australia Pty Ltd.CLEANTEK Industries, Inc. /Old/Oilflow Solutions, Inc.Maelgwyn Mineral Services Ltd.Carbon Oil ASAHyosung D&P Co., Ltd.Ancor Tecmin SAQingdao Tiancheng Energy Equipment Manufacturing Co. Ltd.
China National Heavy Machinery Research Institute Co., Ltd.China National Heavy Machinery Research Institute Co., Ltd.Sany Heavy Equipment Co., Ltd.Joy Manufacturing Co.Joy Manufacturing Co.Joy Global Underground Mining LLCHydril Co.Varco International, Inc.Camco International, Inc.China Coal Beijing Coal Mining Machinery Co. Ltd.ABB Vetco Gray, Inc.Tone Boring Co., Ltd.Lubrizol Oilfield Solutions, Inc.Shanghai Jintai Engineering Machinery Co. Ltd.MAN TAKRAF Frdertechnik GmbHNational Mine Service Co.Morris Industries, Inc.Chengdu Ouxun Technology Co., Ltd.Interwell Norway ASNippon Kaiko Co., Ltd.Wuxi Jinfan Drilling Equipment Co., Ltd.Comacchio SrlPetreco International, Inc.Minova Australia Pty Ltd.CLEANTEK Industries, Inc. /Old/Mait SpAOilflow Solutions, Inc.Maelgwyn Mineral Services Ltd.Daewon Soil Co. Ltd.Carbon Oil ASA
Hilti AGKoki Holdings Co. Ltd.Makita Corp.Snap-On, Inc.China National Heavy Machinery Research Institute Co., Ltd.China National Heavy Machinery Research Institute Co., Ltd.Sany Heavy Equipment Co., Ltd.Joy Manufacturing Co.Joy Manufacturing Co.Joy Global Underground Mining LLCTechtronic Industries Co., Ltd.Hydril Co.Varco International, Inc.Festool GmbHCamco International, Inc.Robert Bosch Tool Corp.Bucyrus International, Inc.China Coal Beijing Coal Mining Machinery Co. Ltd.ABB Vetco Gray, Inc.metabo AGTone Boring Co., Ltd.Lubrizol Oilfield Solutions, Inc.GSI Creos Corp.MAN TAKRAF Frdertechnik GmbHMAN TAKRAF Frdertechnik GmbHDynabrade, Inc.National Mine Service Co.Chengdu Ouxun Technology Co., Ltd.Kuhn North America, Inc.Interwell Norway AS